package com.shenghui.enterprise.utils;

import java.security.MessageDigest;
import java.util.Random;
/**
 * @Description: Md5加密工具
 * @Author houjh
 * @Email: happyxiaohou@gmail.com
 * @Date: 2020-05-29
 * @Copyright (c) 2020-2022 云南昇晖科技有限公司
 */
public class MD5 {
	private final static String[] hexDigits = { "0", "1", "2", "3", "4", "5",
			"6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };

	/**
	 * 转换字节数组为16进制字串
	 *
	 * @param b 字节数组
	 * @return  16进制字串
	 */

	public static String byteArrayToHexString(byte[] b) {
		StringBuffer resultSb = new StringBuffer();
		for (int i = 0; i < b.length; i++) {
			resultSb.append(byteToHexString(b[i]));
		}
		return resultSb.toString();
	}

	private static String byteToHexString(byte b) {
		int n = b;
		if (n < 0)
			n = 256 + n;
		int d1 = n / 16;
		int d2 = n % 16;
		return hexDigits[d1] + hexDigits[d2];
	}

	public static String MD5Encode(String origin) {
		String resultString = "";

		try {
			resultString = new String(origin);
			MessageDigest md = MessageDigest.getInstance("MD5");
			resultString = byteArrayToHexString(md.digest(origin.getBytes()));
		} catch (Exception e) {
			System.out.println("使用参数[origin: + " + origin + "]加密失败。");
		}
		return resultString;
	}



	public static void main(String[] args) {
		Random random = new Random();
		System.out.println(MD5.MD5Encode(String.valueOf(random.nextInt(10000))));
		System.out.println(String.valueOf(System.currentTimeMillis()));
		System.out.println(String.valueOf(System.currentTimeMillis() / 1000));
	}

}